Multi-stage sprocket assembly for bicycle
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United States of America Patent
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Feb 11, 1992
Grant Date -
N/A
app pub date -
Feb 19, 1991
filing date -
Feb 28, 1990
priority date (Note) -
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Abstract
A multi-stage sprocket assembly for a bicycle having a larger and a smaller sprockets attached adjacent to each other. The smaller sprocket has a concave portion defined in a side face thereof opposite to the larger sprocket. The concave portion is disposed at a position of the smaller sprocket which last interfers with a plate portion of a shifting chain segment extending between and engaging both the smaller and larger sprockets when the drive chain is shifted from the smaller sprocket to the larger sprocket.
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